Research on the effectiveness of group support systems (GSS) technology has begun to explore the “task/technology” fit hypothesis, which suggests an interaction between task type and communication mode. Some limited research employing generic tasks and ad hoc groups has found that GSS-mediated groups perform about the same as their face-to-face counterparts on creative tasks but significantly w...

Case Based Reasoning systems rely on competent case knowledge for effective problem-solving. However, for many problem solving tasks, notably design, simple retrieval from the case-base in not sufficient. Further knowledge is required to help effective retrieval and to undertake adaptation of the retrieved solution to suit the new problem better. This paper proposes methods to learn knowledge f...

objectives: the study was aimed to determine the effectiveness of verbal self-instruction training on math problem-solving of intellectually disabled boy students in tehran provinces. methods: the study was a semi-experimental with pre-test and post-test design with control group. thirty intellectually disabled boy students were selected randomly through cluster sampling method from 9th grade s...